hello. i find error messages in error_logs file

this error is:

    file: /simple-press/sp-startup/site/sp-site-deprecated.php
    line: 105
    function: trigger_error
    User Warning | The function sp_find_icon() has been deprecated and will be removed in a future update. Use the new function sp_paint_file_icon() instead.

 

how to fix it before new update ?
i use simple-press 5.6.3.1 and is up to date